Using your K&N air filter is easy. First, open your vehicle's factory air box. Remove the old air filter and simply drop in the K&N replacement filter. Make sure it's properly seated and close the air box. That's it! For maintenance, check the filter every 10,000 - 15,000 miles. If it looks dirty, it's time to clean it. You can use K&N's cleaning kit. Wash the filter gently with the provided cleaner, then let it dry completely before oiling it with the oil from the kit. Remember to follow the instructions on the kit for the best results. Avoid using harsh chemicals or high - pressure water when cleaning, as this can damage the filter. Store the filter in a dry place when not in use to keep it in good condition.